Elementary Logic
Elementary Logic
Elementary Logic
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Soundness and Completeness<br />
Theorem<br />
System ND is sound, i.e., if a sequent Γ ⊢ C is provable in ND, then<br />
Γ ⊢ C is valid.<br />
Theorem<br />
System ND is complete, i.e., if a sequent Γ ⊢ C is valid, then Γ ⊢ C<br />
is provable in ND.<br />
Yih-Kuen Tsay (SVVRL @ IM.NTU) <strong>Elementary</strong> <strong>Logic</strong> FLOLAC 2011 31 / 64
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